Java教程
HBase Java API to Uitl
本文主要是介绍HBase Java API to Uitl，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！
1 import org.apache.hadoop.conf.Configuration;
2
3 import java.util.HashMap;
4 import java.util.Properties;
5
6 public class Propss {
7 static Properties producer_Props = new Properties();
8 static Properties consumer_Props = new Properties();
9 static HashMap<String, Object> kafka_Consumer = new HashMap<>();
10 public static Configuration setConf(Configuration conf){
11 conf.set("hbase.zookeeper.quorum","hadoop106,hadoop107,hadoop108");
12 conf.set("hbae.zookeeper.property.client","2181");
13 return conf;
14 }
15
16 static{
17 kafka_Consumer.put("bootstrap.servers","hadoop106:9092,hadoop107:9092,hadoop108:9092");
18 kafka_Consumer.put("group.id", "test");
19 //from beginning
20 kafka_Consumer.put("auto.offset.reset","earliest");
21 kafka_Consumer.put("key.deserializer","org.apache.kafka.common.serialization.StringDeserializer");
22 kafka_Consumer.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
23
24 producer_Props.setProperty("bootstrap.servers","hadoop106:9092,hadoop107:9092,hadoop108:9092");
25 producer_Props.setProperty("ack","all");
26 producer_Props.put("key.serializer","org.apache.kafka.common.serialization.StringSerializer");
27 producer_Props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");
28 producer_Props.put("auto.offset.reset","earliest");
29
30 consumer_Props.setProperty("bootstrap.servers","hadoop106:9092,hadoop107:9092,hadoop108:9092");
31 consumer_Props.setProperty("group.id","test");
32 consumer_Props.put("key.deserializer","org.apache.kafka.common.serialization.StringDeserializer");
33 consumer_Props.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
34 consumer_Props.put("auto.offset.reset","earliest");
35 }
36 }
1 import org.apache.hadoop.conf.Configuration;
2 import org.apache.hadoop.hbase.*;
3 import org.apache.hadoop.hbase.client.*;
4 import org.apache.hadoop.hbase.filter.SingleColumnValueFilter;
5 import org.apache.hadoop.hbase.util.Bytes;
6 import java.io.IOException;
7 import java.util.ArrayList;
8 import java.util.Iterator;
9 import java.util.List;
10 import java.util.UUID;
11
12 public class HBase_Util {
13 static Configuration con = HBaseConfiguration.create();
14 static Configuration conf = Propss.setConf(con);
15 static Connection connection;
16 static HBaseAdmin admin;
17 static Table t;
18
19 static {
20 try {
21 connection = ConnectionFactory.createConnection(conf);
22 admin = (HBaseAdmin)connection.getAdmin();
23 } catch (IOException e) {
24 e.printStackTrace();
25 }
26 }
27
28 //建表
29 public static void build_Table(String tableName,List<String> FamilyNames) throws Exception {
30 TableDescriptorBuilder buider = TableDescriptorBuilder.newBuilder(TableName.valueOf(tableName));
31 for (String columnName : FamilyNames) {
32 ColumnFamilyDescriptor info = ColumnFamilyDescriptorBuilder.of(Bytes.toBytes(columnName));
33 buider.setColumnFamily(info);
34 }
35 TableDescriptor build = buider.build();
36 admin.createTable(build);
37 System.out.println("____build_done____");
38 }
39
40 //插入一条数据
41 public static void insert_Row(String tableName,String row,String Family,String qualifier,String value) throws Exception {
42 t = connection.getTable(TableName.valueOf(tableName));
43 Put put = new Put(Bytes.toBytes(row));
44 Put put1 = put.addColumn(Bytes.toBytes(Family), Bytes.toBytes(qualifier), Bytes.toBytes(value));
45 t.put(put1);
46 System.out.println("____insert_Row_done____");
47 }
48
49 //插入num条数据
50 public static void insert_Batch(String tableName,String row,String Family,String qualifier,String value,Integer num) throws Exception {
51 t = connection.getTable(TableName.valueOf(tableName));
52 List<Put> list=new ArrayList<>();
53 for (int i = 0; i < num; i++) {
54 String s = UUID.randomUUID().toString().replaceAll("-", "");
55 Put puts = new Put(Bytes.toBytes(s));
56 Put putss = puts.addColumn(Bytes.toBytes(Family), Bytes.toBytes(qualifier), Bytes.toBytes(value+i));
57 list.add(putss);
58 }
59 t.put(list);
60 System.out.println("____insert_Batch_done____");
61 }
62
63 //删除表
64 public static void drop_Table(String tableName) throws Exception {
65 if (admin.tableExists(TableName.valueOf(tableName))){
66 admin.disableTable(TableName.valueOf(tableName));
67 admin.deleteTable(TableName.valueOf(tableName));
68 System.out.println("____drop_Table_done____");
69 }else {
70 System.out.println("____no_such_Table_found____");
71 }
72
73 }
74
75 //删除一条数据
76 public static void delete_Row(String tableName,String row) throws Exception {
77 t = connection.getTable(TableName.valueOf(tableName));
78 Delete delete = new Delete(Bytes.toBytes(row));
79 t.delete(delete);
80 System.out.println("____delete_Row_done____");
81 }
82
83 //特定列过滤查询
84 public static void scan_Filter(String tableName,String Family,String qualifier,CompareOperator compare,byte[] value) throws Exception {
85 t = connection.getTable(TableName.valueOf(tableName));
86 SingleColumnValueFilter filter = new SingleColumnValueFilter(Bytes.toBytes(Family), Bytes.toBytes(qualifier), compare, value);
87 Scan scan = new Scan();
88 Scan scan1 = scan.setFilter(filter);
89 ResultScanner scanner = t.getScanner(scan1);
90 Iterator<Result> iterator = scanner.iterator();
91 while (iterator.hasNext()){
92 Cell[] cells = iterator.next().rawCells();
93 System.out.println("____"+new String(CellUtil.cloneRow(cells[0]))+"____");
94 for (Cell cell : cells) {
95 System.out.print(new String(CellUtil.cloneRow(cell)));
96 System.out.print(" - ");
97 System.out.print(new String(CellUtil.cloneFamily(cell)));
98 System.out.print(" - ");
99 System.out.print(new String(CellUtil.cloneQualifier(cell)));
100 System.out.print(" - ");
101 System.out.println(new String(CellUtil.cloneValue(cell)));
102 }
103
104 }
105 System.out.println("____scan_Filter_done____");
106 }
107 //查询一条数据
108 public static void scan_Row(String tableName,String row)throws Exception{
109 t = connection.getTable(TableName.valueOf(tableName));
110 Get get = new Get(Bytes.toBytes(row));
111 Result result = t.get(get);
112 Cell[] cells = result.rawCells();
113 for (Cell cell : cells) {
114 System.out.print(new String(CellUtil.cloneRow(cell)));
115 System.out.print(" - ");
116 System.out.print(new String(CellUtil.cloneFamily(cell)));
117 System.out.print(" - ");
118 System.out.print(new String(CellUtil.cloneQualifier(cell)));
119 System.out.print(" - ");
120 System.out.println(new String(CellUtil.cloneValue(cell)));
121 }
122 System.out.println("____scan_Row_done____");
123 }
124 //区间查询数据
125 public static void scan_Rows(String tableName,String row1,String row2)throws Exception{
126 t = connection.getTable(TableName.valueOf(tableName));
127 Scan sc=new Scan(Bytes.toBytes(row1),Bytes.toBytes(row2));
128 ResultScanner scanner = t.getScanner(sc);
129 Iterator<Result> iterator = scanner.iterator();
130 System.out.println("____前闭后开____");
131 while (iterator.hasNext()){
132 Result next = iterator.next();
133 Cell[] cells = next.rawCells();
134 System.out.println("____"+new String(CellUtil.cloneRow(cells[0]))+"____");
135 for (Cell cell : cells) {
136 System.out.print(new String(CellUtil.cloneRow(cell)));
137 System.out.print(" - ");
138 System.out.print(new String(CellUtil.cloneFamily(cell)));
139 System.out.print(" - ");
140 System.out.print(new String(CellUtil.cloneQualifier(cell)));
141 System.out.print(" - ");
142 System.out.println(new String(CellUtil.cloneValue(cell)));
143 }
144 }
145 System.out.println("____scan_Rows_done____");
146 }
147 //查询一条特定列族数据
148 public static void get_value_by_family(String tableName,String row,String family)throws Exception{
149 t = connection.getTable(TableName.valueOf(tableName));
150 Get get = new Get(Bytes.toBytes(row));
151 get.addFamily(Bytes.toBytes(family));
152 Result result = t.get(get);
153 Cell[] cells = result.rawCells();
154 for (Cell cell : cells) {
155 System.out.print(new String(CellUtil.cloneRow(cell)));
156 System.out.print(" - ");
157 System.out.print(new String(CellUtil.cloneFamily(cell)));
158 System.out.print(" - ");
159 System.out.print(new String(CellUtil.cloneQualifier(cell)));
160 System.out.print(" - ");
161 System.out.println(new String(CellUtil.cloneValue(cell)));
162 }
163 System.out.println("____get_value_by_family_done____");
164 }
165
166 //查询一条特定列数据
167 public static void get_value_by_qualifier(String tableName,String row,String family,String qualifier)throws Exception{
168 t = connection.getTable(TableName.valueOf(tableName));
169 Get get = new Get(Bytes.toBytes(row));
170 get.addColumn(Bytes.toBytes(family),Bytes.toBytes(qualifier));
171 Result result = t.get(get);
172 Cell[] cells = result.rawCells();
173 for (Cell cell : cells) {
174 System.out.print(new String(CellUtil.cloneRow(cell)));
175 System.out.print(" - ");
176 System.out.print(new String(CellUtil.cloneFamily(cell)));
177 System.out.print(" - ");
178 System.out.print(new String(CellUtil.cloneQualifier(cell)));
179 System.out.print(" - ");
180 System.out.println(new String(CellUtil.cloneValue(cell)));
181 }
182 System.out.println("____get_value_by_qualifier_done____");
183 }
184
185 //全查某表
186 public static void scan_All(String tableName) throws Exception {
187 t = connection.getTable(TableName.valueOf(tableName));
188 Scan sc=new Scan();
189 ResultScanner scanner = t.getScanner(sc);
190 Iterator<Result> iterator = scanner.iterator();
191 while (iterator.hasNext()){
192 Result next = iterator.next();
193 Cell[] cells = next.rawCells();
194 System.out.println("____"+new String(CellUtil.cloneRow(cells[0]))+"____");
195 for (Cell cell : cells) {
196 System.out.print(new String(CellUtil.cloneRow(cell)));
197 System.out.print(" - ");
198 System.out.print(new String(CellUtil.cloneFamily(cell)));
199 System.out.print(" - ");
200 System.out.print(new String(CellUtil.cloneQualifier(cell)));
201 System.out.print(" - ");
202 System.out.println(new String(CellUtil.cloneValue(cell)));
203 }
204 }
205 System.out.println("____scan_All_done____");
206 }
207 //查看所有表
208 public static void list() throws Exception {
209 TableName[] tableNames = admin.listTableNames();
210 for (TableName tableName : tableNames) {
211 System.out.println(tableName.toString());
212 }
213
214 }
215 //查看某表结构
216 public static void desc_Table(String tableName) throws Exception {
217 List<TableDescriptor> tableDescriptors = admin.listTableDescriptors();
218 Iterator<TableDescriptor> iterator = tableDescriptors.iterator();
219 while (iterator.hasNext()){
220 TableDescriptor next = iterator.next();
221 if (next.getTableName().toString().equals(tableName)){
222 System.out.println(next);
223 }
224 }
225 System.out.println("____list_done____");
226
227 }
228
229
230 //关流
231 public static void stop() throws Exception {
232 connection.close();
233 System.out.println("____connection_close_done____");
234 }
235 }
1 import org.apache.hadoop.hbase.CompareOperator;
2 import org.apache.hadoop.hbase.util.Bytes;
3
4 import java.util.Arrays;
5 import java.util.List;
6
7 public class Test {
8 public static void main(String[] args) throws Exception {
9 //查询所有表
10 HBase_Util.list();
11 //创建表
12 List<String> list = Arrays.asList("info","data");
13 HBase_Util.build_Table("user_info2",list);
14 //删除某表
15 HBase_Util.drop_Table("user_info2");
16 //查询某表结构
17 HBase_Util.desc_Table("user_info2");
18 //插入一条数据
19 HBase_Util.insert_Row("user_info2","001","info","name","zhangsan");
20 HBase_Util.insert_Row("user_info2","001","info","age","18");
21 HBase_Util.insert_Row("user_info2","001","info","sex","male");
22 HBase_Util.insert_Row("user_info2","001","data","Math","100");
23 HBase_Util.insert_Row("user_info2","001","data","Chinese","97");
24 HBase_Util.insert_Row("user_info2","001","data","English","95");
25
26 HBase_Util.insert_Row("user_info2","002","info","name","lisi");
27 HBase_Util.insert_Row("user_info2","002","info","age","19");
28 HBase_Util.insert_Row("user_info2","002","info","sex","famale");
29 HBase_Util.insert_Row("user_info2","002","data","Math","70");
30 HBase_Util.insert_Row("user_info2","002","data","Chinese","100");
31 HBase_Util.insert_Row("user_info2","002","data","English","99");
32
33 HBase_Util.insert_Row("user_info2","003","info","name","wangwu");
34 HBase_Util.insert_Row("user_info2","003","info","age","20");
35 HBase_Util.insert_Row("user_info2","003","info","sex","male");
36 HBase_Util.insert_Row("user_info2","003","data","Math","65");
37 HBase_Util.insert_Row("user_info2","003","data","Chinese","50");
38 HBase_Util.insert_Row("user_info2","003","data","English","49");
39 //全查某表
40 HBase_Util.scan_All("user_info2");
41 //查询一条记录
42 HBase_Util.scan_Row("user_info2","001");
43 //查询一条记录的 特定列族的 数据
44 HBase_Util.get_value_by_family("user_info2","001","info");
45 //查询一条记录的 特定列的 数据
46 HBase_Util.get_value_by_qualifier("user_info2","001","data","Math");
47 //查询区间数据 [前闭后开)
48 HBase_Util.scan_Rows("user_info2","001","003");
49 //特定列过滤查询
50 HBase_Util.scan_Filter("user_info2","data","Math", CompareOperator.GREATER, Bytes.toBytes(60));
51 //删除某一条记录
52 HBase_Util.delete_Row("user_info2","003");
53
54 HBase_Util.stop();
55 }
56 }
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